Electric insulator



J. F. PHILLIPS 1,750,352

ELECTRIC INSULATOR March Vl l, 1930.

Filed March 51, 1928 /f/f/f//f/ Z fa/nz ATTORNEY WlTN ESSES PatentedMar. 1 1, 1930 UNITED STATESY JOHN F. PHILLIPS, F NEW YORK, N. Y.

ELECTRIC INSULATOR Application mea March 31, 192s. serial Nq. 266,246.

This invention relates to electric insulators, an object of theinvention being to provide an insulator which is protected from theforma- 'tblof ice, snow and water which might tend to bridge the gap ofthe insulator and electrically connect the wires connected to the endsof the insulator.

My invention is especially adapted for use in connection with outdooraerials of radio o receiving sets. By the employment of the same,noises, due to moisture of the insulator or other causes, are, to agreat extent at least, eliminated because the insulator is located in acasing which protects the same from inclement weather conditions.

The invention therefore includes not only an insulator per.l se but acasing to surround the same, and consists in certain novel features ofconstruction and combinations and arrangements of parts which will bemore fully hereinafter described and pointed out in the claim. .Y

In the accompanying drawings- Figure lis a perspective view showing my2`5 improved insulator in connection with the outside aerial of a radioreceiving set;

Figurl 2 is a view in longitudinal section through the cylinder easingshowing the insulator and the connected wires in elevation v F Igure 31s a vlew 1n transverse sectIon on the line 3--3 of Figure 2.

1 represents an outside aerial or antenna wire, which is connected toone end of an insulator 2, and the other end of the insulator isconnectedby a wire 3 with a post or other support 4 constituting asupport for one end of the antenna or aerial. 5 represents a wireleading to the receiving set. The insulator 2,

p illustrated in Figures 2 and 4, is preferably of porcelain or otheranalagous material, is of eneral cylindrical form and has tapering ororizontal ends 6, perforated as shown at 7, forming eyes to receivewires 1 and 3. The cylindrical intermediate portion of the insulator 2has any desired number of annular grooves 8 in which resilient orflexible rings or gaskets 9 are located.

10 represents a cylindrical casing in which Vthe insulator 2 is normallylocated, and this casing 10 may be of glass or any other Vsuitablematerial and is preferably slightly larger in internal diameter than theexternal diameter of the insulator 2, so that the rings or gaskets 9maintain the insulator and the casing spaced apart.

This casing l() is open-ended and of a suitable diameter and shaped toaccommodate the insulator and both the wires l and 3 without any contactof the wires With the easing.

lNhen an insulator is employed, such as above described, and enclosed ina casing 10, Ice, snow and water cannot enclose the insulator so as toelectrically connect the Wires, and the connection is assured andprotected so that noises are-eliminated and a better reception possiblewhen my improved invention is em loyed.

ariousrchanges and alterations might be made in the general form of theparts described without departing from my invention and hence I do notlimit myself to the precise details set forth but consider myself atliberty to make such changes and alterations as fairly fall Within thespirit and scope of the appended claim.

I claim:

A. device of the character described, includIng an insulator, a tubularcasing open at both ends and adapted to receive the insulator and ofgreater length than the insulator,said insulator having annular groovesaround the same and removable compression rlngs In the grooves engagingthe inner face of the casing and spacing the insulator therefrom, andeyes at the ends of the insulator for the connection of Wires thereto.

Signed at New York in the county of New York and State of New York this30th day of March, A. D. 1928.

JOHN F. PHILLIPS.

